Container manufacture



Sept. 2, 1941. R. w. voN sYDw Erm. 2,254,336

CONTAINER MANUFACTURE 3 sheets-sheet 1 Fikle'd Dec. 8, 1939 m m n e D n 3 Sept. 2, 1941.

R. w. voN sYDow Erm CONTAINER MAUFACTURE Filed Dec. 8, 1939 3 Sheets-Sheet 2 Snventors (Xttornegs Sept 2, 1941 R. w. voN sYDow E-r AL 2,254,336

CONTAINER MANUFACTURE Filed Dec. s, 1959 s sheets-sheet 5 Snventors f @f 25%! @L Gttornegs Patented Sept. 2 134i NIT STATES CONTAINER MANUFACTURE Rudolf William von Sydow and Walter E. Sooy,

Middletown, Ohio, assignors to The Gardner- Richardson Company, Middletown, Ohio, a corporation of .Ohio

Application December 15 Claims.

This invention relates to the formation of fibrous tubes, containers, and the like. It relates more particularly to the application of sealing material to the internal surface of tubular bodies such as those adapted for the formation of containers. It is adapted for the application of a surfacing overall or over part of the interior surface of the tubular body after the formation thereof has been effected. It is likewise particularly adapted for use in conjunction with a machine for forming convolute tubes having an inner seam and to effect the application of a coating layer, either to the entire interior surface ofthe body, or in predetermined relation to only that part adjacent the seam, to thereby produce an effectively impervious interior surface within the tube.

It is accordingly a principal object of the invention to provide a simple and highly effective apparatus for' treating the interior of tubes formed of fibrous material for the purpose of sealing the same and providing an impervious interior surfacing thereon.

It is a further object to provide such a device for receiving tubular bodies in predetermined indexed position and applying a sealing material to the interior surface thereof to thereby etect the application of' an impervious surfacing thereon.

It is a 'still further object to provide such a device for receiving a series of convolute wound tubular bodies having inner seams in predetermined indexed position and for effecting the application of a band of sealing material tothe inner seams to effectively cover over the same and to render such seams effectively impervious to the passage 'of the rcontents of the container.

Other objects and advantages will be apparent from the following description, the accompanying drawings, and the appended claims.

In the drawings- Fig. 1 is a plan view of a device constructed in accordance with the present invention, cer' tain parts being broken away to more clearly disclose the construction;

Fig. 2 is a view in side elevation of the same;

Fig. 3 is an end elevational view (on the line 3--3 of Fig. 2);

Fig. 4 is a partial plan view on a larger scale and with certain parts removed to .more clearly disclose the construction and mode of operation;

Fig. 5 is a detail view showing the spray applying device;

Fig. 6 is a sectional view on the line 6-6 of Fig. 5; and

8", 1939, Serial No. 308,126

Fig. 7 is a detail view showing the arrangement for controlling the operation of the spray device in timed relation to the remainder of the mechanism.

While the device of the present invention may be operated separately and independently of the tube forming operation and with either convolute or involute wound tubes, it is particularly adapted for use in coordinated conjunction with a convolute tube forming machine which provides for the periodic delivery of one or a series of aligned tubes. For purposes of illustration the invention will be described in relation to the machine shown in the patent to Scusa et al. No. 2,163,318. assigned to the same assignee as this application. A`s shown in such patent, the machine embodies a rotating mandrel assembly indicated partially and diagrammatically at l0 upon which the tubular bodies are convolutely formed, and from which they are stripped at a predetermined point in the cycle of operation with the tubular bodies in denitely indexed positionv with regard to the location of the inner seam. The machine shown in such patent embodies, as a part of its rotating mandrel assembly, means for effecting the application of a sealing material and treating the interior of the tubes as they are being stripped from the mandrels on which formation has taken place. Where however it is desired to' eil'ect application of a sealing material to the interior of tubular bodies=formed on mechanism which does not provide within itself for the application of such sealing material, or wherever it is desired to utilize a simple mechanism as a separate device for effecting the application of sealing material, the present invention provides asimple and highly satisfactory arrangement for so doing. Hence the present arrangement is applicable for use directly in commotion with tube 40 forming machines, or may be utilied separately and for effecting the application of complete or partial coatings in predetermined position upon the interior of tubular bodies. In order to make clear the manner in which the device of the present invention may be utilized with tube forming machinery, reference will be made throughout to the machine of the patent above referred to, it being understood however that the application of the present invention is not restricted to such particular machine.

The forming mandrel assembly I0' of the tube machine is so arranged that in one of its positions the formed tubular bodies may be stripped from the forming mandrel. While the machine referred to provides for forming a series of tubular bodies, it will be clear that the operation of the present invention is the same regardless of whether a single elongated tube is formed or whether it is cut into a series of tubes. This stripping is effected by means of a stripping device operated from the machine, and arranged to engage the rearmost body and to advance it forward and discharge it from the forming mandrel. The stripping device comprises a pair of sprocket chains I I which carry body engaging members I2, one end of the sprocket chains being supported and rotatably driven within the tube forming machine, and the other end passing around sprocket wheels I3 which are mounted on shaft I4. The chains operate beneath a pair of guide rails I5, and preferably to one side thereof to facilitate the passage of the stripping device through the forming machine. This stripping operation takes place in timed relation to the cycle of operation of the forming machine such that a stripping operation occurs once during each cycle of operation. Likewise the arrangement is such that the tubular bodies are not rotated axially during the stripping operation, and being formed with their interior seams in alignment, such alignment continues throughout the stripping and other operations described herein. For convenience of operation the forming operations are so carried out that the seam is preferably located at the bottom of the tubular bodies in this stripping position.

The machine of the present invention is located adjacent the stripping device just described, and in such position that it receives the tubular bodies as they are being stripped from the forming machine. Where so located the stripping operation is preferably coordinated with its own operation as will be described more in detail. The machine comprises a structural framework 20 in which are mounted a pair of receiving members indicated generally at 2| and 22. As shown these members are mounted in side by side parallel relationship, each member being formed of relatively light-weight construction so that it may be conveniently supported in overhanging relation with a free unsupported end adapted to receive the tubular bodies exteriorly of the member and in telescoping relation thereover. This construction preferably comprises three external guide rods 24 spaced to approximate the internal dimensions of the tubular body to give proper and secure support thereto without however being sufficiently tight as Vto cause binding as the bodies move thereover. A plurality of spacer members 25 locate a central tube 26 with respect to the guide rods, the tubular"- construction providing for high strength with minimum weight of material and inertia. An' outer spacer 21 serves to receive and maintain the free ends of rods 24 in proper position.

The same construction is utilized for each of receiving members 2| and 22, these members being supported at their outer ends from a head 'structure 30 into which the guide rods 24 and through the hub portion 34 of the arm 3|, and rotatably supported in a bearing socket 35 carried in the end frame member 36 of the framework 20.

The receiving members are arranged to be moved alternately into position in alignment with the end of the discharge track, and this is accomplished by imparting an intermittent oscillatory movement to the head and the receiving members. For this purpose shaft 33 is extended toward and adjacent the tube forming machine Where drive means is provided for irnparting such oscillatory movement in timed relation to the sequence of forming operations of the machine, suitable bearing supports being provided for the shaft as required. In order to correlate the operation with that of the forming machine, connection is made to a drive shaft 40 which operates in predetermined timed relation with respect to the operation of the forming machine, such as one rotation per cycle of operation. This shaft 40 carries a pinion 4| which meshes with a gear 42 having twice as many teeth so the gear will rotate at one-half the speed or one-half revolution per cycle of forming operation. This gear carries a cam track 43. A follower 44 is carried by a crank arm 45 which is fastened to shaft 33, the contour of the cam track being so arranged that the shaft 33 is oscillated through one cycle of movement during two cycles of operation of the forming machine.

Thus with receiving member 2| in alignment vwiththe discharge track, a stripping operation takes place to feed the tubular bodies upon such receiving member, following which the head is oscillated to bring receiving member 22 into alignment with the discharge track to receive the next discharge of tubular bodies, the two receiving members thus alternately receiving the bodies as discharged from the forming device.

As each receiving member receives the supply of tubular bodies thereon, the receiving assembly is tilted so that that member is thrown to the outside, and out of alignment with the discharge track. During the feeding of the subsequent supply of tubular bodies onto the alternate member, those tubes on the rst such member are brought into discharging position with respect to a pair of discharge chutes 5|, and 52, respectively. Thus as shown, while the subsequent supply of tubular bodies is being forced onto receiving member 2|, those on member 22 are in line with discharge chute 52. And means are provided for effecting the discharge of such tubes into chute 52 comprising Va discharge pusher 53. Such pusher is carried on a sprocket chain 54 which passes around sprocket wheel 55 at the forward end of the device, such sprocket wheel being carried by cross shaft 56 suitably supported from brackets 51. At the rearward end sprocket wheel 58 is carried on shaft 53 which is suitably supported from the rear bracket member 3B. A similar discharge pusher arrangement is provided upon the opposite side in position to engage the tubular bodies on receiving member l when such member is in the discharge posi- Shaft 56 is arranged to be driven at a proper speed by means of sprocket wheel 60 over which passes sprocket chain 6I suitably driven from sprocket wheel 62. The latter sprocket is preferably arranged to be driven from shaft I4 so that it will operate in definite timed relation with respect to the remainder of the operations.

1t win be clear from the above that with either f receiving member in discharge position, it is located directly beneath and in line with the lower reach of sprocket chain 54, and in such position that the pusher member 53 will travel forwardly and into engagement with the end of the innermost body, to thereby cause the removal of the entire series of bodies thereon from the receiving member, the pusher being located upon the chain in predetermined relation such that it comes into engagement with such body just after the associated receiving ymember has been brought into alignment with its discharge chute.

The arrangement of the discharge chutes as to direction of discharge may be varied as desired, and hence only the initial portion of such chutes has been illustrated. If desired a feeder band 65 may be located in the lower portion of the chutes to frictionally engage the bodies and advance them forwardly through the chute. Such action is not essential however as the bodies will push each other through the chute as each successive discharging operation takes place. Such band may be suitably driven by means of a belt 66 and pulleys 61 arranged to be driven from shaft I4 in the direction to cause the feeding of the bodies in the discharge direction. Likewise it has been found desirable to provide one or more rollers 68` having an arcuate surface thereon which are positioned above the discharge chutes and so located as to engage the tops of the bodies as they are being discharged to prevent any tendency toward flattening thereof such as might occur with freshly formed tubes.

During a period of relative movement between the receiving members and thevbodies received thereon and preferably during the removal of the bodies from the receiving members, means are provided for effecting the application of a sealing or surfacing material to the interior surface thereof. This may be effected in such manner as to cause the application of an overlying coating to substantially the entire interior surface; where however tubular bodies such as convolute bodies which have a protective surfacing thereon are to be treated, it is usually desired merely to effect the application of a relatively narrow band of sealingmaterial to that portion adjacent the inner edge or seam, to thereby cover over said seam and prevent both seepage and wicking of the contents of the container into and through such edge material. For this purpose each tube 26 carries a forwardly extending lightweight bracket adjacent the outer end of the receiving member, and to this bracket is pivotally supported a spray head 1I, fastening means 12 providing for adjustably positioningfthe spray head at suitable spacing'and in desired angular relationship with respect to the bodies within which it is received. Connection is made to the head for the supplying of fluid sealing material thereto by means of line 13, and air is supplied through line 14 under predetermined control to cause the atomizing of the spray material and the control of the application thereof, both lines extending back through tube 26 and out through head 30. The spray nozzle is indicated at and may be suitably adjustable as to the size of the aperture, quantity of material delivered, width of spray, and so forth.

In order to effect application of the spray alternately from the two spray nozzles in predetermined timed relation to the cycle of operation, and throughout the longitudinal extent of the tubular bodies control means are provided which are actuated from a suitable part of the mechanism. This is conveniently effected by means of a cam member located on a shaft which rotates once per cycle of operation. For this purpose shaft 40 is provided with a cam. 16 which has a single rise thereon of a length such that it will provide for the desired duration of the spray during removal of the bodies from each of the receiving members. yA pair of followers 11, 18 are arranged diametrically opposite each other so that they will be engaged sequentially in timed relation by the cam 16. Each follower is pivotally mounted upon a valve member and spring pressed toward engagement with the cam. The valve chamber controls the supply of air from a source of air pressure which is connected at 8|, the outlets being shown at 32 into which the air is thus alternately su'pplied under the control of the cam 16. Air outlets 82 communicate respectively with air lines 14 and thus rst one receiving member and then the other is supplied with air under pressure, and there is thus produced a sprayfof the sealing material which occurs in timed relation so thatthe entire length of the tubular bodies is treated as the respective bodies are removed first from one receiving member, and then from another. As described above such sealing material may be applied either over the whole interior surface or over only a predetermined part thereof bysuitable selection and arrangement of the spray equipment. 'I'he sealing material utilized may be any material such as desired for producing the desired proofing effect and for rendering f the interior of the bodyy resistant or impervious to the passage of moisture, other liquids, oil or grease, and the like, satisfactory results having been secured with the utilization of a cellulose ester material such as nitro-cellulose made up in solution with organic solvents.

While the form of apparatus herein described constitutes a preferred embodiment of the invention, it is to be understood that the invention is not limited to this precise form of apparatus, and that changes may be made therein without departing from the scope of the invention which is defined in the appended claims.

What is claimed is:

1. In a device for applying a surfacing material to the interior of a tubular body, a receiving member movable from a receiving to a discharge position and having a free overhanging end over which the body is received in the receiving position, means for alternately moving said receiving member from one of said positions to the other, means operable in the discharge position of said receiving member for removing the tubular body therefrom, and means carried by the receiving member for effecting the application of surfacing material to the interior surface of said tubular body as the same moves relative to said receiving member.

2. In a device for applying a surfacing material to the interior of 'a series of tubular bodies, a receiving member movable from a receiving to a discharge position and having a free overhanging end over which the series of tubular bodies is externally received in said receiving position, means for periodically moving said receiving memberl from one of said positions to the other, means operable in the discharge position of said member for removingthe series of tubular bodies therefrom, and means coordinated with the movement of said series of tubular bodies over said receiving member for effecting the application of surfacing material to the interior surface of each of said series of tubular bodies as they move relative thereto.

3. In a device for applying a surfacing material to the interior of a tubular body, a plurality of receiving members each movable from a receiving to a discharge position and having a free overhanging end over which the tubular bodies are` received in receiving position, means for moving said receiving members successively into receiving and then into discharge positions, means operable when each of said members is in discharge position for removing the tubular body therefrom, and means carried by'each of said receiving members for effecting the application of surfacing material to the interior surface of the tubular body during relative movement of said body with respect thereto.

4. In a device for applying a surfacing material to the interior of a series of tubular bodies, a plurality of receiving members each movable from a receiving to a discharge position and having a free overhanging end over which the series of bodies is externally received in receiving position, means for moving said receiving members successively into receiving and then into discharge positions, means operable when each of said receiving members is in the discharge position for removing the bodies therefrom and means coordinated With the movement of said tubular bodies over said receiving member for effecting the application of surfacing material to the interior surface of the series of bodies while on said member and as such bodies move relative thereto.

5. In a device for applying a surfacing material to the interior ofa tubular body, a pair of receiving members movable alternately from a re'- ceiving to a discharge position and each having a free overhanging end over which the body is externally received in said receiving position, means for intermittently oscillating said pair of receiving members to move each of them alternately from one of said positions to the other, means operable in the discharge position of each of said members for removing the tubular body thereon,

and means carried by each receiving member for effecting the application of surfacing material to the interior surface ofthe body during relative movement between the body and said means.

6. In a device for'applying a surfacing material to the interior of a tubular body, a pair of receiving members having a common receiving position and individual discharge positions, each of said receiving members having a free overhanging end over which the body is externally received in said receiving position, means for intermittently oscillating said pair of receiving members to position each of them alternately in said receiving position with the other in its discharge position, means operable in the discharge position of each of said members for removing the tubular body thereon, and means carried by each receiving member for effecting the application of surfacing material to the interior surface of the body during relative movement between the body and said means.

'1. In a device for applying a surfacing material cillating said receiving members to move each of them from the receiving position to the discharge position, means operable in the discharge position for removing the tubular body from said receiving member. and means carried by the receiving member in predetermined positioning thereon for eiecting the application of a band of surfacing material in overlying relationship with respect to the inner seam of said tubular body during a period of relative movement between said means and said body. l

8. A device of the character described adapted for effecting the application of an inner surfacing to a tubular body comprising a plurality of receiving members each having an overhanging end adapted in receiving position to receive formed tubular bodies exteriorly thereon, means for moving the receiving member with the tubular bodies thereon away from said reeciving position and to a discharge position, means for thereafter removing the tubular bodies from said receiving member, means carried by the receiving member for effecting the application of surfacing material to the interior surface of the body as the body moves relative thereto, and means forv coordinating the action of said removing means with the means for moving the receivI ing member so that the bodies are removed fron each member during the time that a subsequen member is receiving an additional supply of tubular bodies.

9. A device of the character described adapted for use in the application of surfacing material to the inner surface of a tubular body comprising a pair of receiving members, means for supporting said members from one end in parallel overhanging relation, said members having a common receiving position for receiving tubular bodies in external encircling relation thereon and having individual discharge positions, means for moving said supporting means intermittently to alternately position each one of said members in said receiving position and the other in its discharge position, means for engaging the bodies on the member in the discharge position to cause removal thereof from said member, and means carried by each of said members and operable during movement of said body relative to said member for effecting the application of a spray of surfacing material to the interior surface of said body.

10. A device of the character described adapted for use in the application of surfacing material to the inner surface of a series of tubular bodies comprising a pair of receiving members, means for supporting said members from one end in parallel overhanging relation, said members having a common receiving position for receiving tubular bodies in external encircling relation thereon and having individual discharge positions, means for moving said supporting means intermittently to alternately position each one of said members in said receiving position and the other in its discharge position, means for engaging 4the bodies on the member in the discharge position to cause removal thereof from said member, and means coordinated with the movement of said tubular bodies over each of said members and operable in a predetermined one of the alternate positions thereof for effecting the application of a spray of surfacing material to the interior surface of said bodies.

11, A device of the character described adapted Vfor use in the application of surfacing material to the inner surface of a tubular body escasas comprising a pair or receiving members, means for supporting said members from one end in parallel overhanging relation, said members having a common receiving position for receiving tubular bodies in external encircling relation thereon and having individual discharge positions, means for moving said supporting means intermittently to alternately position each one of said members in said receiving position and the other in its discharge position, means located in each discharge position and adapted to engage the inner end of the body upon said member when said member moves into discharge position for removing the body from ,said member; and means carried by each of said members and operable during movement of said body relative to said member for effecting the application of a spray of surfacing material to the interior surface of said body.

12. A device of the character described adapted forY use in the application of surfacing material to the inner surface of a tubular body com- 'prising a pair of receiving members, means for supporting said members from one end in parallel overhanging relation, said members having a common receiving position for receiving tubular bodies in external encircling relation thereon and having individual discharge positions, means for moving said supporting means intermittently to alternately position each one of said members in said receiving position and the other in its discharge position, means for engaging the bodies on the member in the discharge position to cause removal thereof from said member, means carried by each of said members and operable during movement of said body relative to said member for effecting the application of a. spray of surfacing material to the interior surface of said said member, means carried by each oi said members and operable during movement of 'said bodies relative to said member for edecting the application of a spray of surfacing material to the interior surface thereof and a discharge conveyor for receiving .the tubular bodies as they are removed from said member in the discharge .position to Withdraw the same therefrom.

14. A device of the character described adapted for usein the application of surfacing material s rto the inner surface oi' series of tubular bodies comprising a pair of receiving members, means for supporting said members from oneend in parallel overhangingrelation, said members having a common receiving position for receiving ytubular bodies in external encircling relation thereon and having individual discharge positions. means for moving said supporting means intermittently to alternately position each one of said members in said receiving position and the other in its discharge position, means for enbody, and means for controlling the operation ofx said spray device in timed relation to the movement of said receiving members to cause application of a spray to the entire -longitudinal dimension of said bodies.

13. A device of the character described adapted for use in the application of surfacing material to the inner surface of 'a series of tubular bodies comprising a pair of receiving members, means for supporting said members from one end in parallel overhanging relation, said members having a common receiving position for receiving tubular bodies in external encircling relation thereon and having individual discharge positions, meansA for vmoving said supporting means intermittently to altemately'position each one of said members in said receiving position and the other in its discharge position, means for engaging the bodies on the member in the discharge position to cause removal thereof from gaging the bodies on the member in the discharge position to cause removal thereof from. said member, means carried by each of said members and operable during movement of said bodies relative to said member for effecting the application of a spray of surfacing material to the interior surface thereof, and means for engaging the bodies during withdrawal at portions thereof spaced from the zone of contact of said removing means therewith to 'prevent buckling thereof.

15. `A device of the character described for periodically receiving and effecting the application of a sealing material to the interior surface of a tubular body comprising a plurality of receiving members each having a free overhanging end and movable from a receiving position to a discharge position, means for intermittently moving said receiving members into said receiving position tov receive -the tubular body on said overhanging end and for thereafter moving said member with the tubular' body thereon into discharge position, means for operating said moving means in predetermined timed relation to the periodic receiving of the tubular bodies, means operable inthe discharge position of said receiving members to remove the tubular body therefrom in preparation for a subsequent receiving operation, and means operable during relative movement of lsaid ytubular bodyywith respect to said receiving member for effecting application of a treating material to the interior surface of the body adapted to render` the same substantially impervious.

RUDOLF WILLIAM von sYDoW. WALTER E. sooY. 

